Removable disc connection problem

Removable disc connection problem

[Georgina Joyce]

Hi

I'm having problems in accessing removable disks that have a fat32 file
system on my unstable debian system.  I thought that it might be because
I've not selected something in my custom kernel but can't see what.
Maybe I need to write a udev rule but I can't get my head around that
but I'm just stabbing in the dark any ideas?

usb 2-5: new full speed USB device using ohci_hcd and address 7
usb 2-5: configuration #1 chosen from 1 choice
scsi6 : SCSI emulation for USB Mass Storage devices
usb 2-5: New USB device found, idVendor=1c71, idProduct=c001
usb 2-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 2-5: Product: VR Stream
usb 2-5: Manufacturer: Humanwre
usb 2-5: SerialNumber: 951303010843
scsi 6:0:0:0: Direct-Access     Humanwre VR Stream        2006 PQ: 0
ANSI: 0 CCSsd 6:0:0:0: [sdd] 4022028 512-byte hardware sectors (2059 MB)
sd 6:0:0:0: [sdd] Write Protect is off
sd 6:0:0:0: [sdd] Assuming drive cache: write through
sd 6:0:0:0: [sdd] 4022028 512-byte hardware sectors (2059 MB)
sd 6:0:0:0: [sdd] Write Protect is off
sd 6:0:0:0: [sdd] Assuming drive cache: write through
 sdd:<7>usb-storage: queuecommand called

usb-storage: Bulk status result = 0
usb-storage: Bulk Status S 0x53425355 T 0x4 R 192 Stat 0x1
usb-storage: -- transport indicates command failure
usb-storage: Issuing auto-REQUEST_SENSE
usb-storage: Bulk Command S 0x43425355 T 0x5 L 18 F 128 Trg 0 LUN 0 CL
12
usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
usb-storage: Status code 0; transferred 31/31
usb-storage: -- transfer complete
usb-storage: Bulk command transfer result=0
usb-storage: usb_stor_bulk_transfer_sglist: xfer 18 bytes, 1 entries
 
-- 
Gena

http://www.ready2golinux.com

M0EBP

Re: Removable disc connection problem

[Tony Baechler]

Georgina Joyce wrote:
> I'm having problems in accessing removable disks that have a fat32 file
> system on my unstable debian system.  I thought that it might be because
> I've not selected something in my custom kernel but can't see what.
> Maybe I need to write a udev rule but I can't get my head around that
> but I'm just stabbing in the dark any ideas?
>
> usb 2-5: Product: VR Stream
> usb 2-5: Manufacturer: Humanwre
>   

Hi,

First, you probably shouldn't include your serial number on public 
mailing lists.  Have you tried using a card reader instead?  The Stream 
should work in Linux but Humanware has said many times that using a card 
reader is the recommended, and much faster, way to copy books to the SD 
card.  Also, although this seems obvious, make sure you do a full card 
format as FAT32.  I've read various reviews that said that cards had to 
be reformatted several times before they worked correctly.

Re: Removable disc connection problem

[Georgina Joyce]

> First, you probably shouldn't include your serial number on public 
> mailing lists.  Have you tried using a card reader instead?  The Stream 
> should work in Linux but Humanware has said many times that using a card 
> reader is the recommended, and much faster, way to copy books to the SD 
> card.  Also, although this seems obvious, make sure you do a full card 
> format as FAT32.  I've read various reviews that said that cards had to 
> be reformatted several times before they worked correctly.

Many thanks for your thoughts.  I'm not sure if my serial number is of
any use to anyone.  It's not used like a screen reader token.  I thought
that it was for the hardware.  But I'll bare it in mind for the future.

Anyway I constructed the message as I did for a reason.  That was for
USB sticks cards in readers still have the same problem.  It's my
configuration and nothing to do with the stream or it's cards.  I just
copied the output from the stream.  I've no problem with the stream and
that card under Windows.  For the three cards I've tried, the stream has
formatted them quite adequately in one stroke, it would be interesting
to hear what brand of cards such difficulties occur.

Thanks.

 
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
-- 
Gena

http://www.ready2golinux.com

M0EBP

Re: Removable disc connection problem

[Adam Myrow]

By any chance, did you configure your kernel to probe all LUNs for SCSI 
devices?  Since USB storage devices emulate SCSI, and card readers show up 
as multiple devices, this is necessary to access all the slots on the card 
reader.  Also, I've had some USB storage devices, like my cell phone, show 
up with no partitions.  In that case, I had to mount the whole disk, I.E. 
/dev/sde, in order to access it.  HTH.

Re: Removable disc connection problem

[Georgina Joyce]

Hi

Many thanks for the suggestion. I hadn't but I've built a new kernel
enabling the probing of all luns.  But it hasn't changed anything.

On Sun, 2008-07-20 at 22:27 -0500, Adam Myrow wrote:
> By any chance, did you configure your kernel to probe all LUNs for SCSI 
> devices?  Since USB storage devices emulate SCSI, and card readers show up 
> as multiple devices, this is necessary to access all the slots on the card 
> reader.  Also, I've had some USB storage devices, like my cell phone, show 
> up with no partitions.  In that case, I had to mount the whole disk, I.E. 
> /dev/sde, in order to access it.  HTH.
> 
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
-- 
Gena

http://www.ready2golinux.com

M0EBP